0
What is the diffusion of water molecule through a selectively permeable membrane?
It's called osmosis.
A selectively permeable membrane will only allow certain molecules to pass trough. To illustrate: If you have a high concentration of sugar molecules on one side of the membrane, no sugar on the other side, and the sugar molecules are too big to pass trough the membrane. If this is the case, then water molecules will diffuse over to the side of the membrane with a high sugar concentration. This happens because the molecules try to distribute themselves evenly in the solution. The water molecules move because the sugar molecules can't.
What else can I help you with?
What does facilitated diffusion?
A transport protein, a large polar molecule, a semi-permeable membrane and a concentration gradient.
How are osmosis and diffusion different?
Diffusion is the net movement of a substance through a membrane from a higher concentration to a lower concentration. Osmosis is the diffusion of water.
What structure allows only certain things to pass in and out of a cell?
The cell membrane. It is a semi-permeable membrane (or selectively permeable membrane) - this means that it only lets certain certain molecules or ions pass in or out of the cell. Permeability may depend on the molecule's size, solubility, properties, or chemistry.
What organelle is part of selectively permeable?
It is based on the structure of the cell membrane, which has proteins and lipids in it that make some substances impermeable to the membrane, often based on slight electrical charges and sometimes by size of the molecule or other chemical properties. Some substances require an enzyme or hormone to cross the barrier of the cell membrane, such as binding sites on cell membranes that will not allow glucose into the cell unless insulin binds with the sites, which forms a chemical bridge to allow glucose molecules to pass through the cell membrane into the cell. Without the insulin, the cell membrane is impermeable to glucose.
Which the two structure in plant cell are selectively permeable allowing molecules of water and small solutes to pass through but preventing the passage of large solute molecule?
Cell membrane and sap vacuole membrane
What are three types of passive transport?
Diffusion- is the movement of the substance from an area of higher concentration to an area of lower concentration,Osmosis- is the diffusion of water molecule only through a membrane semipermeable cell membranes allow water to pass through them until equilibrium occurs.Facilitated Diffusion- carrier proteins, and channel proteins it occurs when molecule pass through a cells membrane.
Substances that can pass through cell membranes by diffusion include?
Small molecules such as oxygen, carbon dioxide, and water can pass through cell membranes by diffusion. Lipid-soluble molecules like alcohol and steroid hormones can also diffuse through cell membranes.
Which the structure in plant cell are selectively permeable allowing molecules of water and small solutes to pass through but preventing the passage of large solute molecule?
only plasma membrane
How do diffusion and osmosis related to each other?
Diffusion and osmosis are both passive transport processes that involve the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis specifically refers to the movement of water molecules across a selectively permeable membrane, while diffusion can involve the movement of any type of molecule. Both processes are driven by the concentration gradient and do not require energy input from the cell.
How is osmosis related to diffusion and what are the key similarities and differences between the two processes?
Osmosis is a type of diffusion that involves the movement of water molecules across a selectively permeable membrane. Both osmosis and diffusion involve the movement of molecules from an area of high concentration to an area of low concentration. The key difference between the two processes is that diffusion refers to the movement of any type of molecule, while osmosis specifically refers to the movement of water molecules.
How do molecules get in the cell?
Well, in order for a small molecule to get into a cell, diffusion has to begin. Diffusion is when particles tend to move from an area of higher concentration to an area of lower concentration. During this process, equilibrium is reached. The cell membrane has to, however, be permeable and/or semi-permeable to certain substances for it to enter a cell.
In which cell will the molecules diffuse in?
Molecules will diffuse into the cell with the lower concentration of that specific molecule, moving from an area of higher concentration to an area of lower concentration. This process occurs across the cell membrane, which is selectively permeable, allowing certain molecules to pass while restricting others. The direction of diffusion continues until equilibrium is reached, where the concentration of the molecule is equal inside and outside the cell.
